Multiple spindle boring machine



May 10, 1932. Q c, GOUGH 1,857,953

MULTIPLE SPINDLE BORING MACHINE 7 Filed June 27, 1928 4 Sheets-Sheet 1May 10, 1932.

A. GOUGH MULTIPLE SPINDLE BORING ucnms v Filed Jun 27, 19,287///////////////////////// 4 Sheets-Sheet 3 y 1932- A; c. GOUGH MULTIPLE,SPINDLE BORING MACHINE Filed June 27. 1928 Jri/ztzr. 63' 001.5 07;

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Patented May 10, 1932 UNITED STATES PATENT OFFICE ARTHUR C. GO'UGH, OFFITCHIBURG, MASSACHUSETTS, ASSIGNOB. T0 SHAW CRANE PUTNAM MACHINECOMPANY, INC., OF FITCHBURG, MASSACHUSETTS, A OOBZPOBA- TION. OFDELAWARE MULTIPLE SPIN'DLE BORING MACHINE U Application" filed June 27,

This invention relates to a special machine for boring cylinders orautomobile engines but, of course, is also capable of being carried outwithout much change for the boring of other articles and also fortapping and other similar operations.

The principal object of the invention is to provide an arrangementwhereby the machine can be changed very simply and with a minimum costboth as to materials and time for boring cylinders in which the centersare at different distances-a art. I

Other objects of t e invention are to provide a frame or casing for sucha'machine or 16 head adapted to be carried on the boring machinestandard and fitted with removable lates for supporting thebearings forthe oring s indles, which plates can be'removed and rep aced byothers'and operated by the 2 same means and in the same way withoutother changes; to provide, in connection therewith, a novel arrangementof roller beari n in which the taper rollers run directly on t e s indleso as to eliminate the inner race and t us enable me to use this type ofbearing with comparatively large spindles, in the small spacenecessarily provided in the boring of automobile cylinders and the like;to: rovide means for lubrication involving ba es surrounding the sindles so as to prevent the main art of the oilfrom passing 'downthespind es and divert it back into the oil tank and also to providebaflles for likewise collecting the small amount of lubricant thatpasses down the spindles in a similar way and to provide a constructionin'which the motor is mounted directly on the spindle head thus reducingthe driving arts from the motor to the cuttingtool an the lost power toa minimum. 4

Other ob'ects and advantages of the invention will appear hereinafter. JReference is to be had to the accompanyi drawings in which i 1 is afront view of a boring machine I withioring mechanism thereon,constructed in accordance with this invention, particu- 4' flarlyadapted for boringautomobile cylin ders 1928. Serial 1T0. 288,780.

3 is a diametrical sectional view with v tool spindles showing themethod of taking care of the lubricant;

Fig. 5 is a plan of the gear box;

Figs. 6, 7 and 8 are plans of the three remova le plates and associatedparts on the lines 66, 77 and 88 of Fig. 3, and

Fig. 9 is a sectional view on the line 99 of Fig. 8.

Although capable of other uses this invention is designed especially foruse in the boring of automobile engine cylinders and is shown asapplicable to a six-cylinder engine. It is customary in plantsmanufacturing these heads to make each one throughout for a particularspacing of cylinders which it is designed to-bore and when it has to bemade for a difierent spacing it has'to be built throughout with thecenters changed for that purpose. When amachine or head of this kind hasto be used for boring engine cylinders in which the spacings o thecylinders are slightly diiferent from those on which it.

has been used before, the whole head has to be discarded. I

This invention is designed to enable a manufacturer to make the casingand the support for the motor and its reducing gearing of a standardpattern and to provide means whereby the boring spindles can be placedin it very readily, spaced different distances apart to permit of theuse of the 'parts above mentiond in man makes of engines and yet permitof the c 'anging of the spacing with a minimum of expense and work.Moreover, whenever from time to time spacings of the bores of thecylinder block are changed by any manufacturer, the

machine which has been used can be changed over readily and not onl thepermanent parts above mentioned use but the spindles also. This is anadvantage to the manufacturer of boring machines who can desi and makenew supports for the spindles w en he finds thecustomer has changed thedesign of the engine-slightly, but-it is also of bene- W fit to theautomobile manufacturer because he can simply give the new spacings tothe machine tool manufacturer and only a few parts have to beinterchanged with those previously in the machine.

The machine is shown as comprising an ordinary type of upright standard10 mounted on a base 11 and having a platform 12 for supporting theengine block to be bored. The standard is provided with vertical ways 13on which operates a slide 14. No method of raising and lowering it hasbeen shown as any ordinary method can be used, but screw holes 15 areillustrated for the feed screws. 7

On this slide is fixed in the usual way a casing 17 which is fixed tomove with the slide and this is provided with an opening in the frontprovided with a cover plate 16. On the casing is a to cover 18 whichalso is a permanent part 0 the structure and a motor casin 19 is mounteddirectly and centrally on this cover 18 for the purpose of reducing thedriven parts from the motor to the cut ting tools to a minimum andreducing the lost power.

The motor shaft 20 is provided with a pinion 21 meshing with an internalgear 22 on a driving shaft 23. This driving shaft is mounted on rollerbearings 24, preferably of the Timken type. One of these bearings iscarried by the cover 18 and the one at the other end by a removableplate 25 secured in a definite position to the lower side of an integralhorizontal web 39 in the casing'.

The driving shaft is provided with a gear 26. From here on the gearingis substantially the same as that usually employed. This gear 26 meshes.with two gears 27, one on each side and on two intermediate shafts 28.These shafts are supported in Timken bearings 29, one supported by theplate 25 and the other supported by another removable plate 30 fixed inadefinite place on the top of the web 39. On these shafts 28 are anotherpair of gears 31 which drive three gears 32 on shafts 33, which also areintermediate shafts. These shafts are supported by Timken bearings 34,one at one end of the shaft in the plate '30 and the other at the otherend of the shaft on a removable bottom plate 35. The three shafts 33 areprovided 'onary or integrally mounted in the casing ffilnd if the threeplates 25, 30land 35 were sta- 6, the whole device would have to bediscarded when a change of this kind is made.

But, according to this invention, nothing has to be. discarded but thesethree plates which are taken out and replaced by three other plates withsubstantially the same design but having dilferent spaces not only forthe shafts 3.8 but also for the shafts 33 and the plate 25 for the shaft28. In many cases the plate 25 will not have to be replaced. This is avery important feature, particularly on account of the roller bearingsfor which these plates have to be bored.

It will be seen that as these plates are set in place and bolted to thestationary parts of the casing 17 in the same bolt holes and as one ofthese plates is a bottom plate allowing for access below the cross web39 which is integral with the casing 17 and as the cover 18 is alsoremovable to expose the plate 30,

it is a comparatively simple matter to take- These shafts therefore areset up in thesame way for any different design that may be required andassembled very easily With these removable plates and the permanentcasing 17 In order to space the boring spindles so near together andprovide Timken bearings for them a special mounting has been devised.This is shown more especially in Fig. 4 in which the bearing rollers '40run directly on a conical seat 41 machined directly on the spindle, inthis case the tool spindle 38. This does away entirely with the innerrace and saves the space taken up thereby. In this case an outer race 42is employed and the principal advantage is that it permits of obtaininga large diameter spindle spaced on' the intake of the pump is connected.The

oil is sprayed in any of the usual ways around the inside of the headbut then it runs down and settles on a surface 48. A pressed metalbafile plate 49 is provided around each spin- -dle 38 to prevent all buta mere mist of oil from passing down around the spindle. The surface 48is provided with an opening 50 therein through which this oil is draineddown through a pipe 51 into the oil tank 47.

A series of grooves 56 in the surface 48 are adapted to collect the oildeposited on this surface and direct it into the perforations 50.

The small amount of oil which passes the baffle plate 49 drains downthrough the Timken bearing to lubricate it and in between two baflleplates 52 and 53. The baflles 52 and 53 a are 'in'the form of collarssurrounding the shaft 38 and the boring tool head 54;. The bafile 52 hasan internally conical downwardly extending skirt with a sharp edge andthe bafile 53 has an upward projection which is conical outside, leavinga space between these conical surfaces for receiving the oil and odrains it into a pipe 55 which drains it into an oil tank 47. I

It will be seen therefore that the changes above referred to can be madein a very simple manner in the factory in which these machines are builtand that the outside casing 17 and the cover 18 can be designed forquite a wide range of spindle distances and when an order comes in foramachine giving new spindle distances, the proper plates 25,

20 and can be provided or designed readily and inserted in place withthe proper shafts with comparative ease.

-Also after the machine hasbeen in use in the shop of the automobilemanufacturer,

25 any ordinary change desired in the cylinder distances can be made'andthe proper directions sent to the manufacturer of the machine who canship new plates and they can be inserted in a minimum of time. The im-30 provement in the roller bearing is also an important feature and themethod of taking care ofthe lubricant and returning it to the tank aswell.

Although I have illustrated and described 5 only one form of theinvention I am aware of thefact that modifications can be made thereinby any person skilled in the art without departing from the scope of theinvention as expressed in the claim. Therefore, I

40 do not wish to be limited in this respect but what I do claim is In amultiple boring machine, the combination with a permanent casing havinga bearing, a main shaft having one end mount ed in said bearing, aseries of shafts, gearing mounted on said shafts, a series of bearingspindles adapted to be driven bysaid gearing, and a set of removableplates carrying the bearings for said'shafts and spindles and adapted tobe detached and replaced for the purpose of spacing the bearing spindlesI differently, of an oil pump connected with one of said spindles to beoperated thereby, an 'oil tank for supplying the oil thereto, a

baflle plate surrounding each of said spindles and preventing passageofthe main part of the lubricant down along the spindle, a surface inone of said removable plates on which the oil from the baflle plates iscollected, and

means for draining the oil from said surface into the tank. i

In testimony whereof I have hereunto affixed my signature.

ARTHUR o. GOUGHI;

